About: prison labor

Premodifier: prison
Head noun: labor

Same concepts
http://dbpedia.org/resource/Penal_labour

Broader concepts

label	provenance	confidence
force labor	isap:368995111	0.625183
prison	isap:156448851	0.360827
slavery	isap:224434516	0.287640

Narrower concepts

label	provenance	confidence